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Finding the Fourth Proportional to 159,162.72, 219,643.44 and 87,540.96

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Solution

The fourth proportional to 159,162.72, 219,643.44 and 87,540.96 is: 120,805.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,162.72 : 219,643.44 = 87,540.96 : x
  2. Step 2: Convert to fraction form
    159,162.72/219,643.44 = 87,540.96/x
  3. Step 3: Cross multiply
    159,162.72x = 219,643.44 × 87,540.96
  4. Step 4: Simplify right side
    159,162.72x = 19,227,797,595.30
  5. Step 5: Solve for x
    x = 19,227,797,595.30/159,162.72
  6. Step 6: Final answer
    x = 120,805.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.